I like the idea of practicing (in a fun, playful way) to get better at it, rather than testing it to see if it's true.
Yesterday while out and about I decided I would try and attract something specific. I was sitting in a parking lot and I noticed somebody's license plate said "TWINIE." So, I decided to see twins yesterday. I closed my eyes and daydreamed about some twins I have known, went to high school with, went to college with. Then into my mind popped Mary Kay & Ashley Olsen. I laughed and said "No, it won't count if I see them because they're on magazine covers all the time." Then I was amused to see that I was already discounting one possible experience, but really, how could seeing the Olsen twins on a magazine cover count?
The next rummage sale I went to had a book for sale by Mary Kay Ash of Mary Kay Cosmetics. Which made me laugh again.
I didn't see any twins all day, but one sale I went to had a bed headboard for sale and they had put a sign on it that said "Twin Headboard." I pointed at it to acknowledge that counted. Then back home, I'm reading a book by Stuart Wilde (on the recommendation of somebody here), and he was talking about going to a store and attempting to buy Twinning Tea. Hee.